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《.岩土的工程性质（engineering properties of . rock and soil）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、4.岩土的工程性质（Engineeringpropertiesof4.rockandsoil）1.Rocksandsoilsareaggregatesofmineralsandaretheproductofnaturalgeologicalprocesses.Andtransformeachotherundergeologicalconditions.2,rockandsoil,therearemanysimilaritiesandcloseties,butalsoobviousdifferences.Thereisastrongconn
2、ectionbetweenthe3,rockmineralparticles,whichisanimportantfeatureofrockstructure,themainreasonisdifferentfromtherocksoilandgiveexcellentengineeringgeologicalpropertiesoftherock,therockbuildingconditionsmuchbetterthanthegeneralsoil.4,therockmassiscomposedofrockmassstructure
3、,itiseverykindofmacrogeologicalinterfaceisdividedintodifferentsizeandshapes,therearemanyblocksinacertainregularity,theengineeringpropertiesoftherockmassandgeologicalinterfaceisdetermined.5.Thestructureofrockmassismorecomplicatedthanthatofsoil.Faults,jointsandotherstructur
4、alplanes(zones)existintherockmass,whichmaketheintegrityofrockmassdestroyedandcausethemechanicalpropertiesoftherocktobecomeworseorseriouslyuneven.Thedivisionofthestructuralplaneintherockmassisnotvisibleinthesoil.6,therockmasshashighercrustalstress,whichistheresultofgeologi
5、calstructureinthelong-termgeologicalhistoryoftherockmass.Andonlytheexistenceofselfweightstressexistsinthesoil.Ontheengineeringpropertiesofcommonrock:iscloselyrelatedtotheindexofengineeringpropertiesofrockformation,theprosandconsofrockoccurrence,textureandstructure,mineral
6、composition,jointdevelopmentdegreeandthedegreeofweatheringofrock,thesevengeologicalcharacteristicshasbecomethefoundationonitsengineeringproperties.Thejointdevelopmentdegreeandweatheringdegreemustbetakenintofullconsideration.Magmaticrockintrusiverocks:1.Themagmaiscrystalli
7、zedslowlyintheground.Themineralsarewellcrystallized,andtheparticlesarestronglyconnected,andtheyaremostlyblockystructures.Therefore,intrusiverockhaslowporosity,strongwaterresistance,highmechanicalstrengthandhighelasticmodulus,andhasgoodengineeringproperties.2.Themoreconten
8、tofquartz,feldspar,amphiboleandpyroxenefromminerals,thehighertherockstrengthandtheincreaseofmica
